Compound blowing-engine.



No. 654,966. Patented July 3|, I900.

F. a. GASCHE & r. H. FOOTE.

COMPOUND BLOWING ENGINE.

(Application filed Feb. 26, 1898.) (N M el.) 3 Sheets-Sheet I,

No. 654,966. Patented July 3|, 1900.

' I r. 6. GASCHE & r. H. FOOTE.

COMPOUND BLOWING ENGINE.

(Application filed Feb. 26, 1898.) (No Model.) 3 Sheets-Sheet 2,-

No. 654,966. Patented .Iuly 3|, 1900.

F. G. GASCHE 8'. F. H. FOOTE.

COMPOUND BLOWING ENGINE.

(Application filed Feb. 26, 1898.) (No Model.) 3 Sheets-Sheet 3.

' UNITED ST TES PATENT m FERD'G. 'enso'iin ANDFREDERlCK H FOOTE, or CHICAGO, ILL'nvois.

cot/moon D BLOWING-ENGIN E.

SPECIFICATION forming part 8r Letters resent hid. 654,966, dated July 31, 1900. Application filed February 26,1898. Serial No. 671,736. (Nomodeh) To all whom it may concern.-

Be it known that we, FERD G. GASCHE and; FREDERICK H. Foorn, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in"Oompound Blowing-Engines, of which the following is a specification.

Our invention relates to that class of engines in which a reciprocating piston is used for compressing atmospheric air and which is connected directly with the movable of a compound engine. I

The object of our inventionis to provide a simple, economical, and efficient compound engine; and the invention consists in the features, combinations, and details of construction hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side elevation, partly in section, of a blowing-engine constructed in accordance with our improvements; Fig. 2, a sectional detail taken on line 2 of Fig. 1; Fig. 3,"an end elevation looking at the enginefrom the righthand of Fig. 1; and Fig. 4, a plan view, partly in section, looking at the mechanism fromthe top and taken on the irregular line 4 4 of Fi 1.

In the art to which this invention relates it is well known that it is common to'use a blowing-engine and connect the same directly with the pistons of a compoundengine ar ranged in tandem relation with it. The Ohjections to this arrangement and construction are twofoldflrst, the engine'occu'pies considerable space,and, second,themaximum; efficiency of the compound engine is not ob tained, for the reason that the maximum power is applied to the compressing mechanism at a time when it has the least work to do. The principal object. of our invention, therefore, is to overcome these? objections by providing an engine in which'the highpressure and low-pressure cylinders are arrangedin' right-angular relation to each other and connected to a common crankshaft, so as to perform the work economically and efficiently.

Further objectsw-ill appear from an inspection of thedrawings and the following a same plane, and the end of the vertical condescription and'cla'imsr In describing the engine shown in the acpistons" ic'ompanying drawings we will only describe {those portions which we consider to be new in connection with so much as is old as will enable ,th'ose'skilled in the art to practice the invention, leaving out of consideration old and well-known mechanisms for the purpose of avoiding prolixity, confusion, and ambiguity.

In constructing an engine in accordance with our improvements we make a frame A of the desired size, shape, and strength to hold theoperative and other parts in proper gr'e'lation with each other. On one end of this .frame' and preferably arranged in a horizontal plane is a high-pressure cylinder B, which is provided with inlet and exhaust valves 1) b of the usual type and which are arranged'to be operated by what is known as the Corliss valve-gear, shown in diagram matic view, all of which is well known and understood in the art.

In order to provide for the economical operation of the compressing-piston and its rod'D, which is arranged in the compressingcylinder D,we provide a low-pressure cylinder E and arrange it vertically on the frame portion substantially at right angles to and above the plane occupied by the companion cylinder. A Each of the cylinders is provided with movable pistons 17 and e,havingprojecting piston rods which are connected to crossheads 12 and c. The crank-shaft G is arranged at a point where lines carried centrally or axially'through' the piston-rods of the highpressureand low-pressure cylinders would meet. This crank shaft is provided with fly- ,wheels H, which practically form the cranks which: carry the wristpins h, to which the connecting-rods h, which connect with the piston of thelo'w-pressure cylinder, are connected,so as to transform the rectilinear movements of the low-pressurse piston into rotary movements of the crank -shaft. In order to assist in the rotations of the crank-shaft in the operation of the compressing-piston, connecting-rods 712, which connect with the crosshead of one piston, are pivotally secured to the strap of the connectingrod on th'e'other piston at h at a point of center to the wrist-pin, so that during the rotations offthe wrist-pin the connecting rod's travel in the of the hi gh '-pressure connecting-rod describesp approximately, an ellipse. This arran gement;

and construction of parts obtains amateiial advantage in that when the compressing-piston is at the beginning of its strokefsothat the air in one side is compressed to its maxi mum:..density thelhorizontalpiston is: exerts ing its maximum eflfect-that is, pulling the 1 crank under-+and when the work ofcompresss 1o ing begins the other sid'ebf the piston'ofi'the vertical cylinder is beginning at its point of least efficiency untili the quarter is i eached where theairbeginsto' be compressed to its':

' twisting-or-rockingmotion of the shaft, with,

consequent inj uriouscrank-pini pressures. r I Steam u-nden'pressure is admitted into thehigh-pressnrecylinder directly through the-- inlet pi p'e I and exhausted from such cylin der thronghthelpipe 1 into" the low-pressure cylinden bymeans of the pipel @hear.

' rangemen-t of the engine'stin theright-angu mitsof atdirect com-m u-nication fromthe highpressure cylinder to the low-pressure. cylin der S0 -thatth8 "fluid under pressure m-aybe -afl 'mltl;Bd directly it leaves thehigh-pressure cylinder and removes the necessity of hold ing the fluid under'p'ressu're fora time in-a'n temporary'reservoir; This obtains anaddi tional'advantage in. that there isncgreat,

pooling; of steam when it is under pressure,

a In acompoun-d hlowing-engine,;the cons a hination of arhigh-pressnre cylinder, a low cylinder; one piston having a horizontal and the-other avertical traverse in relation to.

each other: for the advance movement of one 7 piston-tote coincident with-the return mo;ve--

mentof the other piston atLthe point of great est? power,=a cornpressor-cylinderin line with-a; pressure-cy1inder,a piston in the compressor cylinder moving in unison with the piston ofits' alined pressure -cylinder;; a crank shaft at the. juncture of the axiallines of the twopressure-cylinders, a connection for the pis ton' of the high pressure cylinder with-the:

- crank-shaft, aconnectionfor-the piston ofthe v each'other and -means connecting the piston "low-pressurcceylinder with the crank-shaft,

the two connections standing" off center to of the compressor-cylinder with thecrankshaft,a-s;ubstantially as described;

- '2. In acompoundblowing-engina thecom binationof ahorizontal; hi gh-pressure cylincylinders havinga right-angle relation-to each i other; a1movabl pist6n in; each cylinder for one piston to have its horizontal'travel in an advance direction coincident with the vertical""t'ravel of the other piston in the return direction at the point of highest power and pressure," a-.com'pressor.-cylinder. in lineawlith the vertical pressure-cylinder, a piston in the other, and; acon-nectionrbetmeen thepistensi 0f the compresscrreylinderrandY thfi-r'verticail 'i1ow-press ure; "cylinders;- substanti-ally as 'de: scribed; v I 7 r 3. In;acorn-poundlhlovving engine thefcom bination of a high-pressurecyli-nderarran ged .ina honizontal planeandl-prov'idedr'w-itha movable-piston having an extending piston?- rod a crcss-head-to which; the piston-rod is secure'd, a:low-pressure -cy-li-n-der a granzged: in a vertical plane and provided-withe movablel'arr manner-instead of a tandemamanner perpiston and; an extendingpi-s-t'on- 206,1 coin- :rod; a. cross-head to:whichz-thepistenrlrod-of [piston are connected, awcnank-shafa;a wrist- 1 pin for" the: crank-shaft; arranged; substan-v V V vtially'attthe point wherethje-axi allinesmt the and consequently the maximum eflicienzcycylinders: meet; connecting reds connectinghe cross eadofi the lew-p e surerni t nte 1 the wrist'ping and connecti ng rods; pivotally 1 connected "in thesarneverticalplanetothe thelow-pressurepistonand thecomrpi essi-ng flow-pressure connecting-rods and the cross* p head of; the high-pressure cylinder substanitiall yas-described, i a v 4. i Inza compound blowing-engine; theccma bination of a horizontakhigh pressurecylim den, a vertical low-pressure eylin ery re two S other, -a-m.eva]o1e piston ineacheylinder for one-piston: to have its-horizontalrtravelr i' l'itn cylinders having a right-angle relation tcoach advance, direction coincident with the; vertif cal travel of the, other piston-imthe get um di "rection" at the-- point of 'higliestppowemand pressure, a compressor-cylinder i'n-lineewith the vertical low-pressure cylindera piston in' thie compressor-cylinder-m0 ving inunison with-the piston of the ali ned low-pressurecyl= inder, a crank-shaft transversely cf: the cylinders atthe axial- -lineofi juncture fcr the two pressure-cylinders, a-crankat eachend of the crank-shaft, awrist-pin: on'eachmank, a rod for each wrist-pin connectingrtheclankshaftwiththe cross-head: of me low-pressure and? compressor cylinders, an oifiset rat thelower end of each connectin g redatthe wristpin and a rod connecting each offset with the cross-head of the high-pressure cylinder at the offset, substantially as described.

5. In a compound blowing-engine, the combination of a horizontal high-pressure cylinder, a vertical low-pressure cylinder, the two cylinders having a right-anglerelation to each other, a movable piston in each cylinder, a piston-rod for each piston, a cross-head for each piston-rod, a compressor-cylinderin line with the vertical low-pressu re cylinder, a piston in the compressor-cylinder,a piston-rod connecting the pistonof the compressor-cylinder with the cross-head of the piston-rod for the vertical low-pressure cylinder,a crankshaft transversely of the high and low pressure cylinders at the axial line of juncture, a,

crank at each end of the crank-shaft,a wristpin on each crank, a rod for each wrist-pin extending vertically and connecting with the cross-head of the vertical low pressure and compressor cylinders, an ofiset at the lower end of each vertical connecting-rod adjacent to the wrist-pin and a horizontal rod extending from each ofiset to and connecting with the cross-head of the horizontal high-pressure cylinder for operating the pistons of the highpressure and low-pressure cylinders at the point of highest operation in the compressorcylinder, substantially as described.

6. In a compound blowing-engine, the combination of a high-pressure cylinder, a lowpressure cylinderhavin g a right-angle relation to the high-pressure cylinder, a compressorcylinder in alinement with a pressure cylinder, a piston in the high-pressure cylinder and a piston in the low-pressure cylinder, a piston in the compressor-cylinder moving in unison with the piston of the pressure-cylingreatest density, substantially as described.

7. In a compound blowing-engine, the combination of a horizontal high-pressure cylind'er,a 'vertical low-pressure cylinder, the two cylinders having a right-angle relation to each other, a compressorcylinder in alinement vwith the low-pressure cylinder, a piston in each ofthe pressure-cylinders and a piston in the compressor cylinder moving in unison withthe piston of the low-pressure cylinder, a piston-rod for each piston, a crank-shaft common to all of the piston-rods, a connection for the piston-rod of the vertical lowpressure cylinder with the crank-shaft at the end of the crank, and a connection for the piston-rod of the horizontal low-pressure cylinder with the crank-shaft at a point between the connection for the vertical piston-rod and the shaft for exerting the maximum power of the pressure-cylinders when the compressorpiston is acting at the point of compression for greatest density and for exerting'the least power for the pressure-cylinders when the compressor-piston is at the point of least efficiency, substantially as described.

FERD o. GASCHE. VFREDK. I-I. FOOTE.

Witnesses:

N. MORRISON, R. KERSHAW. 

